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Unlike ways and bridges, tunnels require few images. They are always composed of backimage (images displayed behind passing vehicles) and frontimage (images displayed before the vehicles). Here is the pattern:
obj=tunnel
waytype=
name=
cost=
maintenance=
topspeed=
way=
copyright=
intro_year=1800
intro_month=1
retire_year=2999
retire_month=1
icon⇒ source.1.2
cursor=source.1.3
frontimage[N]=source.0.0
backimage[N]=source.1.0
frontimage[W]=source.0.1
backimage[W]=source.1.1
frontimage[S]=source.0.2
frontimage[E]=source.0.3
Tunnels can have snowy images. To define them, a parameter must be added to the name of each image, equal to 0 for normal (summer) view and 1 for snowy (winter) view. Here is an example:
backimage[N]=source.1.0
#becomes …
#normal view
backimage[N][0]=source.1.0
#snowy view
backimage[N][1]=sourcewinter.1.0
| Parameter | Description | Content | Example |
| obj | object type | tunnel | |
| waytype | way type | internal_name | maglev_track |
| name | name | texte | AMT_tunnel_1 |
| cost | price (*100c) | number | 300000 |
| maintenance | maintenance cost (*100c) | number | 8000 |
| topspeed | max speed (km/h) | number | 750 |
| intro_year | introduction year | number | 2025 |
| intro_month | introduction month | number | 1 |
| way | way whose graphics are used for the underground tunnel | name | AMT |
| copyright | name of the creator | text | Gauthier |
